CN118042392A - Analysis control system for acoustic audio test - Google Patents
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Abstract
The invention relates to the technical field of audio testing, in particular to an analysis control system for audio testing, which can rapidly acquire the frequency of test audio by using an audio to be tested to play the test audio, can effectively convert acquired test audio information into a test audio electric signal through preprocessing by an audio preprocessing unit, can rapidly acquire the superposition length of the electric signal curve and a preset electric signal curve by capturing the electric signal curve of the test audio electric signal according to the playing time length of the test audio by an analysis control unit, can rapidly determine whether the analysis control system of the audio testing accords with the standard by determining the superposition ratio of the electric signals, can accurately and correspondingly adjust the test audio according to the cause by searching the cause, and effectively improves the accuracy of the analysis control system of the audio testing.
Description
Technical Field
The invention relates to the technical field of audio testing, in particular to an analysis control system for acoustic audio testing.
Background
Acoustic audio testing can help us to understand the performance of acoustic devices at different frequencies, and when selecting an acoustic device, it is necessary to consider its frequency response range and frequency response curve to select an acoustic device that is suitable for itself. Different audio devices may behave differently in terms of frequency response. Some high-end audio devices may have a wider frequency response range and may exhibit a clearer, more realistic sound quality. Some entry level audio devices may have a narrower frequency response range, but still meet some basic requirements. Meanwhile, the frequency response curve is also one of important tools for evaluating the performance of the acoustic device. The frequency response curve is a graph obtained by measuring the output sound pressure level of an acoustic device at different frequencies, which can help us to understand the behavior of the device at different frequencies. In general, the flatter the frequency response curve, the more stable the frequency response of the device, and the better the sound quality. Thus, the higher the accuracy of the audio test system, the more users can be helped to choose to fit their own audio equipment.
Chinese patent publication No. CN:108124232B discloses a sound test system and a sound test method, wherein the sound test system comprises a test module, an MAC address scanning module and a WI FI module; the test module is connected to the same WI FI local area network where the tested sound is located through the WI FI module, so that the network address of the tested sound is accessed, and test items and content of the tested sound are configured; the test module can automatically detect key functions, LED functions, MAC address matching, product ID matching, volume, sound SOURCE SOURCE switching, WI FI network intensity and the like of the sound products according to the configured test items and contents, and can output corresponding test results according to feedback information of sound to the test, and automatically store the test results in a text or form file. But the invention does not relate to the problem of adjusting and optimizing the accuracy of the analytical test system itself.
Disclosure of Invention
Therefore, the invention provides an analysis control system for acoustic audio testing, which is used for overcoming the problem of accuracy of the analysis control system for acoustic audio testing in the prior art.
To achieve the above object, the present invention provides an analysis control system for acoustic audio testing, comprising:
The testing device unit is used for playing test audio by the sound to be tested;
The information acquisition unit is connected with the testing device and is used for acquiring frequency information of the testing audio;
The audio preprocessing unit is connected with the information acquisition unit and is used for receiving the acquired frequency information and converting the frequency information into a test audio electric signal through preprocessing;
The analysis control unit is connected with the audio preprocessing unit and is used for establishing an electric signal curve according to the captured test audio electric signal and the test audio playing time length and obtaining an electric signal coincidence ratio according to the electric signal curve and a preset electric signal curve, wherein the electric signal coincidence ratio is the ratio of the coincidence length of the electric signal curve and the preset electric signal curve to the total length of the preset electric signal curve;
And the system verification unit is connected with the analysis control unit, the audio preprocessing unit, the acquisition information unit and the testing device unit and is used for determining the reason of the non-conformity with the standard when the acquired audio is judged to be non-conformity with the standard according to the electric signal coincidence ratio value, and determining the audio acquisition parameter or the audio processing parameter in the retest process based on the determined reason.
Further, when the system verification unit judges that the collected audio frequency does not meet the standard based on the electric signal coincidence ratio, the system verification unit determines the audio frequency collection parameter or the audio frequency processing parameter in the retest process based on the determined reason, or preliminarily judges that the collected audio frequency has external factor influence, and judges the external influence factor that the collected audio frequency does not meet the standard based on the ratio of the length of the non-coincident curve in the electric signal curve and the preset point signal curve to the length of the preset electric signal curve.
Further, the system verification unit judges external influence factors of the collected audio frequency which do not accord with the standard based on the scattered duty ratio, judges the external influence factors as environmental noise, and carries out audio frequency test again after noise reduction treatment;
Or, judging the external influencing factors as the test audio problems, and carrying out audio test again after adjusting the test audio;
Or, judging the external influence factors as equipment problems, and carrying out audio test again after adjusting the corresponding equipment;
The dispersion duty ratio is the ratio of the length of the misaligned curve in the electric signal curve to the preset electric signal curve to the length of the preset electric signal curve.
Further, the system verification unit determines the sampling frequency of the microphone in the process of re-collecting the audio frequency based on the integral value of the area surrounded by the non-coincident part line segments in the electric signal curve and the preset electric signal curve when the equipment problem is determined to be the microphone problem;
or, when the equipment problem is failed to be the sound test equipment based on the integral value, a sound replacement notification is issued.
Furthermore, the system verification unit is provided with a plurality of adjustment modes aiming at the sampling frequency of the microphone based on the frequency of the test audio, and the adjustment amplitudes of the adjustment modes aiming at the sampling frequency are different.
Furthermore, the system verification unit is provided with a plurality of adjustment modes aiming at the noise reduction processing of the test audio based on the ratio of the frequency of the test audio to the preset frequency, and the noise reduction amplitudes of the adjustment modes aiming at the test audio are different.
Furthermore, the system verification unit is provided with a plurality of adjustment modes of the frequency of the test audio based on the environmental noise, and the adjustment amplitudes of the adjustment modes aiming at the frequency of the test audio are different.
Further, when the system verification unit determines that the acquired audio frequency does not meet the standard based on the area of the superposition part of the derivative curve obtained by calculating the derivative of the electric signal curve captured by the analysis control unit and the derivative curve obtained by calculating the derivative of the preset electric signal curve is the problem of the output power of the test equipment, the system verification unit redetermines the output power of the test equipment based on the difference value between the frequency of the test audio frequency and the preset first preset frequency;
or, the reason that the area of the overlapping part is determined to be inconsistent with the standard is the problem of the test volume, and the test volume is redetermined based on the difference value between the environmental noise and the preset first preset noise decibel.
Furthermore, the system verification unit is provided with a plurality of adjusting modes aiming at the output power of the test equipment based on the difference value between the frequency of the test audio and the preset first preset frequency, and the adjusting amplitude of each adjusting mode aiming at the output power is different.
Furthermore, the system verification unit is provided with a plurality of adjustment modes aiming at the test volume of the test equipment based on the difference value between the environmental noise and the preset first preset noise decibel, and the adjustment amplitudes of the adjustment modes aiming at the test volume are different.
Compared with the prior art, the method has the advantages that the microphone is used for rapidly acquiring the frequency information of the test audio information including the audio by using the sound to be tested to play the test audio, the audio preprocessing unit is used for effectively preprocessing the acquired test audio information to convert the test audio information into the test audio electric signal, the analysis control unit is used for capturing the electric signal curve established by the test audio electric signal and the test audio playing time, the superposition length of the electric signal curve and the preset electric signal curve can be rapidly acquired, the superposition ratio of the electric signal can be effectively determined by extracting the superposition length and the preset electric signal curve length, the system checking unit is used for judging whether the acquired audio accords with the standard, the test can be accurately carried out according to the reason, and then the test is repeated until the analysis control system accords with the standard, and the accuracy of the analysis control system for the audio test is effectively improved.
Further, the method and the device can quickly find the reason and correspondingly adjust the reason by judging whether the acquired audio accords with the standard, and then re-perform the audio test, or judge the external influence that the acquired audio does not accord with the standard by the ratio of the length of the non-coincident curve in the acquired electrical signal curve and the preset electrical signal curve to the length of the preset electrical signal curve, thereby effectively improving the accuracy of the analysis control system.
Furthermore, the invention can rapidly and accurately judge the collected audio frequency not meeting the external influence factors of the standard through the dispersion occupation, effectively avoid the generation of the misjudgment condition, and simultaneously, carry out audio frequency test again after being regulated through the external influence factors, thereby effectively ensuring the accuracy of the analysis control system.
Furthermore, the invention can quickly determine whether the equipment problem is caused by the microphone problem or the acoustic test equipment problem, thereby saving time and effectively improving the accuracy of the analysis control system.
Furthermore, the accuracy of the analysis control system can be effectively improved by adjusting the sampling frequency of the microphone.
Furthermore, the invention can effectively avoid the influence of environmental noise through the adjustment of the noise reduction processing mode, thereby further improving the accuracy of the analysis control system.
Furthermore, the invention can effectively ensure the audio condition in the optimal audio range of the test sound through the adjustment of the test audio.
Further, the method and the system can rapidly judge the reasons for the system not meeting the standard by determining the reasons for the collected audio not meeting the standard, and the accuracy of the analysis control system can be effectively improved by adjusting the output power or the test volume according to the adjustment of the corresponding reasons.
Further, the accuracy of the analysis control system can be effectively improved by adjusting the output power.
Furthermore, the accuracy of the analysis control system can be effectively improved by adjusting the test volume.
Drawings
FIG. 1 is a schematic diagram of an analysis control system for acoustic audio testing according to the present invention;
FIG. 2 is a schematic diagram of a test device unit for audio testing according to the present invention;
FIG. 3 is a flow chart of a determination of whether the analysis control system meets the criteria according to the present invention;
FIG. 4 is a flow chart of the determination of external influencing factors of the analysis control system according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a schematic diagram of an analysis control system for acoustic audio testing according to the present invention, the analysis control system for acoustic audio testing according to the present invention includes:
The testing device unit is used for testing audio of sound equipment and playing the tested audio by using the sound equipment to be tested;
the information acquisition unit comprises a microphone, is connected with the testing device and is used for acquiring frequency information of the testing audio;
The audio preprocessing unit is connected with the acquisition information unit and is used for receiving the acquired frequency information of the test audio and converting the frequency information of the test audio into a test audio electric signal through preprocessing;
The analysis control unit is connected with the audio preprocessing unit and is used for establishing an electric signal curve according to the captured test audio electric signal and the test audio playing time length and obtaining an electric signal coincidence ratio according to the electric signal curve and a preset electric signal curve, wherein the electric signal coincidence ratio is the ratio of the coincidence length of the electric signal curve and the preset electric signal curve to the total length of the preset electric signal curve;
And the system verification unit is connected with the analysis control unit, the audio preprocessing unit, the acquisition information unit and the testing device unit and is used for determining the reason of the non-conformity with the standard when the acquired audio is judged to be non-conformity with the standard according to the electric signal coincidence ratio value, and determining the audio acquisition parameter or the audio processing parameter in the retest process based on the determined reason.
Referring to fig. 2, which is a schematic diagram of a testing device unit for audio testing according to the present invention, the testing device unit of the present invention adopts a mobile terminal testing device for testing, and the testing device includes: a Central Processing Unit (CPU), a test signal generator, a power amplifier, an audio generator, an audio receiver and an analog-to-digital converter.
The Central Processing Unit (CPU) is respectively connected with the test signal generator, the power amplifier, the audio receiver and the analog-to-digital converter, and the audio generator is connected with the power amplifier. The central processing unit is a unit for centralized control and processing, is a control core of the whole mobile terminal testing device, is realized by adopting a TMS320DM6437 of 32-bit high-performance data processing chip of TI company, has an internal clock of 600MHz, receives a command of a PC through a USB port, controls the mobile terminal testing device to perform related item test, performs complex operation processing on collected data and sends a result back to the PC. When the mathematic means is working such as fast Fourier transform FFT and digital filtering, the central processing unit controls the test signal generator to generate an audio test signal, the central processing unit sends the audio test signal generated by the test signal generator to the interface of the mobile terminal test device, the central processing unit collects the received signal back to the central processing unit through the digital-to-analog converter, and the central processing unit processes the audio signal after digital-to-analog conversion.
In addition, the central processing unit can send the audio test signal to the power amplifier, the power amplifier amplifies the audio test signal, then the power amplifier sends the audio test signal to the audio generator, the audio generator plays the audio, and the audio played by the audio generator can be received by the tested mobile phone. When receiving audio, the test mobile phone plays audio, the audio receiver receives the audio of the test mobile phone to generate an analog audio signal, the analog audio signal is sent to the central processing unit, the central processing unit sends the analog audio signal to the analog-to-digital converter, the analog-to-digital converter converts the analog audio signal into a digital audio signal, and the central processing unit processes the digital audio signal.
Referring to fig. 3, which is a flowchart illustrating a determination of whether the analysis control system of the present invention meets a standard, the system verification unit of the present invention determines whether the collected audio meets the standard based on the electrical signal overlap ratio, including:
if the overlap ratio is smaller than or equal to a first preset overlap ratio, the system verification unit judges that the collected audio does not meet the standard, and determines an audio collection parameter or an audio processing parameter in the retest process based on the determined reasons.
And if the coincidence ratio is larger than the first preset coincidence ratio and the second preset coincidence ratio, the system verification unit preliminarily judges that the acquired audio has external factor influence, and judges the reason that the acquired audio does not accord with the standard based on the ratio of the length of the non-coincidence curve in the electric signal curve to the length of the non-coincidence curve in the preset electric signal curve and the length of the preset electric signal curve.
And if the overlap ratio is larger than a second preset overlap ratio, the system verification unit judges that the acquired audio accords with the standard and continuously tests.
Referring to fig. 4, which is a flowchart illustrating a determination process of external influencing factors of the analysis control system, the system verification unit of the present invention determines that the collected audio does not meet the standard based on the scattered duty ratio, including:
If the dispersion duty ratio is smaller than or equal to a first preset dispersion duty ratio, the system verification unit judges that the external influence factor is environmental noise, and audio test is conducted again after noise reduction processing.
If the dispersion duty ratio is larger than the first preset dispersion duty ratio and smaller than or equal to the second preset dispersion duty ratio, the system verification unit judges that the external influence factors are test audio questions, and the audio test is conducted again after the test audio is adjusted. The second preset dispersion duty cycle is greater than the first preset dispersion duty cycle.
If the dispersion duty ratio is larger than a second preset dispersion duty ratio, the system verification unit judges that the external influence factor is a device problem, and the corresponding device is adjusted to carry out audio test again.
The dispersion duty ratio is the ratio of the length of the misaligned curve in the electric signal curve to the preset electric signal curve to the length of the preset electric signal curve.
Specifically, the system verification unit of the present invention determines a device problem based on an integrated value of an area surrounded by a segment of a non-overlapping portion in an electrical signal curve and a preset electrical signal curve, including:
If the integral of the area surrounded by the segments of the non-overlapped part is larger than a preset integral branch, the system verification unit determines that the equipment problem is a microphone problem, and the audio test is performed again after determining the sampling frequency of the microphone in the process of re-collecting the audio.
If the integral of the overlapping part area is smaller than or equal to a preset integral, the system verification unit determines that the equipment problem is that the sound test equipment is unqualified based on the integral value, and then audio test is conducted again after sending out a sound replacement notification.
Specifically, the system verification unit of the present invention sets several adjustment modes for the sampling frequency of the microphone based on the frequency of the test audio, including:
if the frequency of the test audio is smaller than or equal to the first preset test frequency, the system verification unit uses the first adjusting coefficient f1 to adjust the sampling frequency of the microphone to a corresponding value.
If the frequency of the test audio is larger than the first preset test frequency and smaller than or equal to the second preset test frequency, the system verification unit uses the second adjusting coefficient f2 to adjust the sampling frequency of the microphone to a corresponding value. The second preset test frequency is greater than the first preset test frequency.
If the frequency of the test audio is greater than the second preset test frequency, the system verification unit uses a third adjustment coefficient f3 to adjust the sampling frequency of the microphone to a corresponding value.
Wherein, the invention sets f1=0.98, f2=0.96 and f3=0.94.
Specifically, the system verification unit of the present invention sets a plurality of adjustment modes for the noise reduction processing of the test audio based on the ratio of the frequency of the test audio to the preset frequency, and the adjustment modes include:
And if the ratio is smaller than or equal to a first preset frequency ratio, the system verification unit uses a first adjusting coefficient g1 to adjust the noise reduction key in the system verification unit to a corresponding value.
And if the ratio is larger than the first preset frequency ratio and smaller than or equal to the second preset frequency ratio, the system verification unit uses a second adjusting coefficient g2 to adjust the noise reduction key in the system verification unit to a corresponding value. Wherein the second preset frequency ratio is greater than the first preset frequency ratio.
And if the ratio is larger than a second preset frequency ratio, the system verification unit uses a third adjusting coefficient g3 to adjust the noise reduction key in the system verification unit to a corresponding value.
Wherein, the invention sets g1=0.95, g2=0.93 and g3=0.91.
Specifically, the system verification unit of the present invention is provided with a plurality of frequency adjustment modes of test audio based on environmental noise, and the system verification unit comprises:
And if the environmental noise is smaller than or equal to a first preset noise decibel, the system verification unit adjusts the frequency of the test audio to a corresponding value by using a first adjusting coefficient x 1.
And if the environmental noise is larger than the first preset noise decibel and smaller than or equal to the second preset noise decibel, the system verification unit adjusts the frequency of the test audio to a corresponding value by using a second adjusting coefficient x2, wherein the second preset noise decibel is larger than the first preset noise decibel.
And if the noise is larger than the second preset noise, the system verification unit adjusts the frequency of the test audio to a corresponding value by using a third adjusting coefficient x 3.
Wherein, the invention sets x1=0.99, x2=0.98, and x3=0.97.
Specifically, the system verification unit of the present invention determines, based on the area of the overlapping portion of the derivative curve obtained by taking the derivative of the electrical signal curve and the derivative curve obtained by taking the derivative of the preset electrical signal curve, the reason that the acquired audio frequency does not meet the standard, including:
if the area of the overlapping part is larger than the preset overlapping area, the system verification unit determines that the acquired audio frequency does not meet the standard because of the problem of the output power of the test equipment, and redetermines the output power of the test equipment based on the difference value between the frequency of the test audio frequency and the first preset frequency;
And if the area of the overlapping part is smaller than or equal to the preset overlapping area, the system verification unit judges that the reason which does not meet the standard is the problem of the test volume, and the test volume is redetermined based on the difference value of the environmental noise and the first preset noise decibel number.
Specifically, the system verification unit of the present invention sets a plurality of adjustment modes for output power of the test device based on a difference value between a frequency of the test audio and a first preset frequency, including:
If the difference value is smaller than or equal to a first preset frequency difference value, the system verification unit uses a first adjusting coefficient y1 to adjust an output power button in the system verification unit to a corresponding value;
If the difference value is larger than the first preset frequency difference value and smaller than or equal to the second preset frequency difference value, the system verification unit uses a second adjusting coefficient y2 to adjust an output power button in the system verification unit to a corresponding value; wherein the second preset difference is greater than the first preset difference.
And if the difference value is larger than a second preset frequency difference value, the system verification unit uses a third adjusting coefficient y3 to adjust an output power button in the system verification unit to a corresponding value.
Wherein, the invention sets y1=0.96, y2=0.94, y3=0.92.
Specifically, the system verification unit of the present invention sets a plurality of adjustment modes for the test volume of the test device based on the difference between the environmental noise and the first preset noise decibel, including:
And if the noise difference decibel is smaller than or equal to a first preset decibel difference, the system verification unit adjusts the test volume key to a corresponding value by using a first adjusting coefficient z 1.
And if the noise difference decibel is larger than the first preset decibel difference and smaller than or equal to the second preset decibel difference, the system verification unit adjusts the test volume key to a corresponding value by using a second adjusting coefficient z 2. Wherein the second preset decibel difference is greater than the first preset decibel difference.
And if the noise difference decibel is larger than a second preset decibel difference, the system verification unit adjusts the test volume key to a corresponding value by using a third adjusting coefficient z 3.
Wherein, the invention sets z1=0.99, z2=0.97, z3=0.95.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An analysis control system for acoustic audio testing, comprising:
The testing device unit is used for playing test audio by the sound to be tested;
The information acquisition unit is connected with the testing device and is used for acquiring frequency information of the testing audio;
The audio preprocessing unit is connected with the acquisition information unit and is used for receiving the acquired frequency information and converting the frequency information into a test audio electric signal through preprocessing;
The analysis control unit is connected with the audio preprocessing unit and is used for establishing an electric signal curve according to the captured test audio electric signal and the test audio playing time length and obtaining an electric signal coincidence ratio according to the electric signal curve and a preset electric signal curve, wherein the electric signal coincidence ratio is the ratio of the coincidence length of the electric signal curve and the preset electric signal curve to the total length of the preset electric signal curve;
And the system verification unit is connected with the analysis control unit, the audio preprocessing unit, the acquisition information unit and the testing device unit and is used for determining the reason of the non-conformity with the standard when the acquired audio is judged to be non-conformity with the standard according to the electric signal coincidence ratio value, and determining the audio acquisition parameter or the audio processing parameter in the retest process based on the determined reason.
2. The analysis control system for acoustic audio testing according to claim 1, wherein the system verification unit determines, when the collected audio does not meet the standard based on the electrical signal coincidence ratio value, an audio collection parameter or an audio processing parameter in the retest process based on the determined cause, or preliminarily determines that the collected audio has an external factor influence, and determines external influence factors that the collected audio does not meet the standard based on the ratio of the length of the electrical signal curve to the non-coincidence curve in the preset electrical signal curve to the length of the preset electrical signal curve.
3. The analysis control system for acoustic audio testing according to claim 2, wherein the system verification unit determines external influence factors, which are not in accordance with the standard, of the collected audio based on the dispersion duty ratio, and determines the external influence factors as environmental noise, and re-performs the audio testing after the noise reduction process;
Or, judging the external influencing factors as the test audio problems, and carrying out audio test again after adjusting the test audio;
Or, judging the external influence factors as equipment problems, and carrying out audio test again after adjusting the corresponding equipment;
The dispersion duty ratio is the ratio of the length of the misaligned curve in the electric signal curve to the preset electric signal curve to the length of the preset electric signal curve.
4. The analysis control system for acoustic audio testing according to claim 3, wherein the system verification unit determines the sampling frequency of the microphone in the process of re-collecting the audio based on an integrated value of an area surrounded by a non-overlapping part line segment in the electrical signal curve and the preset electrical signal curve when the equipment problem is determined to be a microphone problem;
or, when the equipment problem is failed to be the sound test equipment based on the integral value, a sound replacement notification is issued.
5. The analysis control system for acoustic audio testing according to claim 4, wherein the system verification unit is provided with a plurality of adjustment modes for the sampling frequency of the microphone based on the frequency of the test audio, and the adjustment amplitudes of the adjustment modes for the sampling frequency are different.
6. The analysis control system for acoustic audio testing according to claim 3, wherein the system verification unit is provided with a plurality of adjustment modes for the test audio noise reduction processing based on a ratio of the frequency of the test audio to a preset frequency, and noise reduction amplitudes of the adjustment modes for the test audio are different.
7. The analysis control system for acoustic audio testing according to claim 3, wherein the system verification unit is provided with a plurality of adjustment modes of the frequencies of the test audio based on the environmental noise, and adjustment amplitudes of the adjustment modes for the frequencies of the test audio are different.
8. The analysis control system for acoustic audio testing according to claim 3, wherein the system verification unit determines that the reason why the acquired audio does not meet the standard is a test equipment output power problem based on the difference between the frequency of the test audio and a preset first preset frequency when the area of the overlapping portion of the derivative curve obtained by taking the derivative of the electrical signal curve captured by the analysis control unit and the derivative curve obtained by taking the derivative of the preset electrical signal curve is determined as the test equipment output power problem;
or, the reason that the area of the overlapping part is determined to be inconsistent with the standard is the problem of the test volume, and the test volume is redetermined based on the difference value between the environmental noise and the preset first preset noise decibel.
9. The analysis control system for acoustic audio testing according to claim 8, wherein the system verification unit is provided with a plurality of adjustment modes for the output power of the test device based on a difference between the frequency of the test audio and a preset first preset frequency, and the adjustment amplitudes of the adjustment modes for the output power are different.
10. The analysis control system for acoustic audio testing according to claim 8, wherein the system verification unit is provided with a plurality of adjustment modes for the test volume of the test device based on a difference between the environmental noise and a preset first preset noise decibel, and adjustment amplitudes of the adjustment modes for the test volume are different.
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| CN116567513A (en) * | 2023-05-24 | 2023-08-08 | 西安外国语大学 | Stereo earphone testing method and system based on filter |
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| CN116206628A (en) * | 2023-02-17 | 2023-06-02 | 惠州市德赛西威汽车电子股份有限公司 | Multimedia multi-audio test method, system, multimedia device and storage medium |
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